GRUB rescueで九死に一生を得た had a narrow escape from death thanks for GRUB rescue - くだらぬみちくさにっき ---- To waste one’s time on the road might be good, I think.

grub rescue>set

prefix = (hd0,msdos7)/boot/grub

root = hd0,msdos6

grub rescue>set prefix=(h0,msdos6)/boot/grub

grub rescue>set root=h0,msdos6

grub rescue>insmod (h0,msdos6)/boot/grub/normal.mod

grub rescue>normal